1<html> 2<head> 3<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 4<title>Facets for Floating-Point Infinities and NaNs</title> 5<link rel="stylesheet" href="../math.css" type="text/css"> 6<meta name="generator" content="DocBook XSL Stylesheets V1.79.1"> 7<link rel="home" href="../index.html" title="Math Toolkit 2.12.0"> 8<link rel="up" href="../utils.html" title="Chapter 2. Floating Point Utilities"> 9<link rel="prev" href="sign_functions.html" title="Sign Manipulation Functions"> 10<link rel="next" href="fp_facets/facets_intro.html" title="Introduction"> 11</head> 12<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"> 13<table cellpadding="2" width="100%"><tr> 14<td valign="top"><img alt="Boost C++ Libraries" width="277" height="86" src="../../../../../boost.png"></td> 15<td align="center"><a href="../../../../../index.html">Home</a></td> 16<td align="center"><a href="../../../../../libs/libraries.htm">Libraries</a></td> 17<td align="center"><a href="http://www.boost.org/users/people.html">People</a></td> 18<td align="center"><a href="http://www.boost.org/users/faq.html">FAQ</a></td> 19<td align="center"><a href="../../../../../more/index.htm">More</a></td> 20</tr></table> 21<hr> 22<div class="spirit-nav"> 23<a accesskey="p" href="sign_functions.html"><img src="../../../../../doc/src/images/prev.png" alt="Prev"></a><a 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href="fp_facets/portability.html">Portability</a></span></dt> 35<dt><span class="section"><a href="fp_facets/rationale.html">Design Rationale</a></span></dt> 36</dl></div> 37<h5> 38<a name="math_toolkit.fp_facets.h0"></a> 39 <span class="phrase"><a name="math_toolkit.fp_facets.synopsis"></a></span><a class="link" href="fp_facets.html#math_toolkit.fp_facets.synopsis">Synopsis</a> 40 </h5> 41<pre class="programlisting"><span class="keyword">namespace</span> <span class="identifier">boost</span><span class="special">{</span> <span class="keyword">namespace</span> <span class="identifier">math</span> 42<span class="special">{</span> 43 <span class="comment">// Values for flags.</span> 44 <span class="keyword">const</span> <span class="keyword">int</span> <span class="identifier">legacy</span><span class="special">;</span> 45 <span class="keyword">const</span> <span class="keyword">int</span> <span class="identifier">signed_zero</span><span class="special">;</span> 46 <span class="keyword">const</span> <span class="keyword">int</span> <span class="identifier">trap_infinity</span><span class="special">;</span> 47 <span class="keyword">const</span> <span class="keyword">int</span> <span class="identifier">trap_nan</span><span class="special">;</span> 48 49 <span class="keyword">template</span><span class="special"><</span> 50 <span class="keyword">class</span> <span class="identifier">CharType</span><span class="special">,</span> 51 <span class="keyword">class</span> <span class="identifier">OutputIterator</span> <span class="special">=</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">ostreambuf_iterator</span><span class="special"><</span><span class="identifier">CharType</span><span class="special">></span> 52 <span class="special">></span> 53 <span class="keyword">class</span> <span class="identifier">nonfinite_num_put</span> <span class="special">:</span> <span class="keyword">public</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">num_put</span><span class="special"><</span><span class="identifier">CharType</span><span class="special">,</span> <span class="identifier">OutputIterator</span><span class="special">></span> 54 <span class="special">{</span> 55 <span class="keyword">public</span><span class="special">:</span> 56 <span class="keyword">explicit</span> <span class="identifier">nonfinite_num_put</span><span class="special">(</span><span class="keyword">int</span> <span class="identifier">flags</span> <span class="special">=</span> <span class="number">0</span><span class="special">);</span> 57 <span class="special">};</span> 58 59 <span class="keyword">template</span><span class="special"><</span> 60 <span class="keyword">class</span> <span class="identifier">CharType</span><span class="special">,</span> 61 <span class="keyword">class</span> <span class="identifier">InputIterator</span> <span class="special">=</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">istreambuf_iterator</span><span class="special"><</span><span class="identifier">CharType</span><span class="special">></span> 62 <span class="special">></span> 63 <span class="keyword">class</span> <span class="identifier">nonfinite_num_get</span> <span class="special">:</span> <span class="keyword">public</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">num_get</span><span class="special"><</span><span class="identifier">CharType</span><span class="special">,</span> <span class="identifier">InputIterator</span><span class="special">></span> 64 <span class="special">{</span> 65 <span class="keyword">public</span><span class="special">:</span> 66 <span class="keyword">explicit</span> <span class="identifier">nonfinite_num_get</span><span class="special">(</span><span class="keyword">int</span> <span class="identifier">flags</span> <span class="special">=</span> <span class="number">0</span><span class="special">);</span> <span class="comment">// legacy, sign_zero ...</span> 67 <span class="special">};</span> 68<span class="special">}}</span> <span class="comment">// namespace boost namespace math</span> 69</pre> 70<p> 71 To use these facets 72 </p> 73<pre class="programlisting"><span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">boost</span><span class="special">\</span><span class="identifier">math</span><span class="special">\</span><span class="identifier">special_functions</span><span class="special">\</span><span class="identifier">nonfinite_num_facets</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span> 74</pre> 75</div> 76<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> 77<td align="left"></td> 78<td align="right"><div class="copyright-footer">Copyright © 2006-2019 Nikhar 79 Agrawal, Anton Bikineev, Paul A. Bristow, Marco Guazzone, Christopher Kormanyos, 80 Hubert Holin, Bruno Lalande, John Maddock, Jeremy Murphy, Matthew Pulver, Johan 81 Råde, Gautam Sewani, Benjamin Sobotta, Nicholas Thompson, Thijs van den Berg, 82 Daryle Walker and Xiaogang Zhang<p> 83 Distributed under the Boost Software License, Version 1.0. (See accompanying 84 file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>) 85 </p> 86</div></td> 87</tr></table> 88<hr> 89<div class="spirit-nav"> 90<a accesskey="p" href="sign_functions.html"><img src="../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../utils.html"><img src="../../../../../doc/src/images/up.png" alt="Up"></a><a accesskey="h" href="../index.html"><img src="../../../../../doc/src/images/home.png" alt="Home"></a><a accesskey="n" href="fp_facets/facets_intro.html"><img src="../../../../../doc/src/images/next.png" alt="Next"></a> 91</div> 92</body> 93</html> 94
